51260511 has 4 divisors (see below), whose sum is σ = 68347352. Its totient is φ = 34173672.

The previous prime is 51260507. The next prime is 51260519. The reversal of 51260511 is 11506215.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 51260511 - 2² = 51260507 is a prime.

It is a super-2 number, since 2×51260511² = 5255279975962242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51260519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8543416 + ... + 8543421.

It is an arithmetic number, because the mean of its divisors is an integer number (17086838).

Almost surely, 2^51260511 is an apocalyptic number.

51260511 is a deficient number, since it is larger than the sum of its proper divisors (17086841).

51260511 is a wasteful number, since it uses less digits than its factorization.

51260511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17086840.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 51260511 is about 7159.6446140853. The cubic root of 51260511 is about 371.4733340882.

Adding to 51260511 its reverse (11506215), we get a palindrome (62766726).

The spelling of 51260511 in words is "fifty-one million, two hundred sixty thousand, five hundred eleven".